From: Brad Larson <brad@pensando.io>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-spi@vger.kernel.org, adrian.hunter@intel.com,
alcooperx@gmail.com, andy.shevchenko@gmail.com, arnd@arndb.de,
brad@pensando.io, blarson@amd.com, brendan.higgins@linux.dev,
briannorris@chromium.org, brijeshkumar.singh@amd.com,
catalin.marinas@arm.com, davidgow@google.com, gsomlo@gmail.com,
gerg@linux-m68k.org, krzk@kernel.org,
krzysztof.kozlowski+dt@linaro.org, lee@kernel.org,
lee.jones@linaro.org, broonie@kernel.org,
yamada.masahiro@socionext.com, p.zabel@pengutronix.de,
piotrs@cadence.com, p.yadav@ti.com, rdunlap@infradead.org,
robh+dt@kernel.org, samuel@sholland.org, fancer.lancer@gmail.com,
skhan@linuxfoundation.org, suravee.suthikulpanit@amd.com,
thomas.lendacky@amd.com, tonyhuang.sunplus@gmail.com,
ulf.hansson@linaro.org, vaishnav.a@ti.com, will@kernel.org,
devicetree@vger.kernel.org
Subject: [PATCH v9 06/15] dt-bindings: mfd: amd,pensando-elbasr: Add AMD Pensando System Resource chip
Date: Wed, 18 Jan 2023 19:39:09 -0800 [thread overview]
Message-ID: <20230119033918.44117-7-blarson@amd.com> (raw)
In-Reply-To: <20230119033918.44117-1-blarson@amd.com>
Add support for the AMD Pensando SoC System Resource chip using the
SPI interface. The device functions are accessed using four
chip-selects. This device is present for all Pensando SoC designs.
Signed-off-by: Brad Larson <blarson@amd.com>
---
Changes since v6:
- Instead of four nodes, one per chip-select, a single
node is used with reset-cells in the parent.
- No MFD API is used anymore in the driver so it made
sense to move this to drivers/spi.
- This driver is common for all Pensando SoC based designs
so changed the name to pensando-sr.c to not make it Elba
SoC specific.
- Added property cs for the chip-select number which is used
by the driver to create /dev/pensr0.<cs>
---
.../bindings/spi/amd,pensando-sr.yaml | 68 +++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/amd,pensando-sr.yaml
diff --git a/Documentation/devicetree/bindings/spi/amd,pensando-sr.yaml b/Documentation/devicetree/bindings/spi/amd,pensando-sr.yaml
new file mode 100644
index 000000000000..8504652f6e19
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/amd,pensando-sr.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/amd,pensando-sr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AMD Pensando SoC Resource Controller
+
+description: |
+ AMD Pensando SoC Resource Controller is a set of
+ control/status registers accessed on four chip-selects.
+ This device is present in all Pensando SoC based designs.
+
+maintainers:
+ - Brad Larson <blarson@amd.com>
+
+properties:
+ compatible:
+ contains:
+ enum:
+ - amd,pensando-sr
+
+ reg:
+ minItems: 1
+
+ cs:
+ minItems: 1
+ maxItems: 4
+ description:
+ Device chip select
+
+ '#reset-cells':
+ const: 1
+
+ interrupts:
+ maxItems: 1
+
+ spi-max-frequency: true
+
+required:
+ - compatible
+ - cs
+ - spi-max-frequency
+ - '#reset-cells'
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ num-cs = <4>;
+
+ system-controller@0 {
+ compatible = "amd,pensando-sr";
+ reg = <0>;
+ cs = <0 1 2 3>;
+ spi-max-frequency = <12000000>;
+ interrupt-parent = <&porta>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ #reset-cells = <1>;
+ };
+ };
+
+...
--
2.17.1
next prev parent reply other threads:[~2023-01-19 3:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-19 3:39 [PATCH v9 00/15] Support AMD Pensando Elba SoC Brad Larson
2023-01-19 3:39 ` [PATCH v9 01/15] dt-bindings: arm: add AMD Pensando boards Brad Larson
2023-01-19 3:39 ` [PATCH v9 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba SoC Brad Larson
2023-01-19 3:39 ` [PATCH v9 03/15] dt-bindings: spi: cdns: Add compatible for " Brad Larson
2023-01-19 3:39 ` [PATCH v9 04/15] dt-bindings: spi: dw: Add AMD Pensando Elba SoC SPI Controller bindings Brad Larson
2023-01-19 3:39 ` [PATCH v9 05/15] dt-bindings: mfd: syscon: Add amd,pensando-elba-syscon compatible Brad Larson
2023-01-19 3:39 ` Brad Larson [this message]
2023-01-19 3:39 ` [PATCH v9 07/15] MAINTAINERS: Add entry for AMD PENSANDO Brad Larson
2023-01-19 3:39 ` [PATCH v9 08/15] arm64: Add config for AMD Pensando SoC platforms Brad Larson
2023-01-19 3:39 ` [PATCH v9 09/15] arm64: dts: Add AMD Pensando Elba SoC support Brad Larson
2023-01-19 3:39 ` [PATCH v9 10/15] spi: cadence-quadspi: Add compatible for AMD Pensando Elba SoC Brad Larson
2023-01-19 3:39 ` [PATCH v9 11/15] spi: dw: Add support " Brad Larson
2023-01-19 3:39 ` [PATCH v9 12/15] mmc: sdhci-cadence: Enable device specific override of writel() Brad Larson
2023-01-19 3:39 ` [PATCH v9 13/15] mmc: sdhci-cadence: Add AMD Pensando Elba SoC support Brad Larson
2023-01-19 3:39 ` [PATCH v9 14/15] mmc: sdhci-cadence: Support mmc hardware reset Brad Larson
2023-01-19 8:57 ` Arnd Bergmann
2023-02-07 1:51 ` Brad Larson
2023-01-19 3:39 ` [PATCH v9 15/15] spi: pensando-sr: Add AMD Pensando SoC System Resource Brad Larson
2023-01-19 9:22 ` Arnd Bergmann
2023-01-19 3:51 [PATCH v9 00/15] Support AMD Pensando Elba SoC Brad Larson
2023-01-19 3:51 ` [PATCH v9 06/15] dt-bindings: mfd: amd,pensando-elbasr: Add AMD Pensando System Resource chip Brad Larson
2023-01-19 7:58 ` Krzysztof Kozlowski
2023-01-26 2:59 ` Brad Larson
2023-01-19 14:17 ` Lee Jones
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